Daikin R71FUV1 Service Manual page 50

Symptom-based Troubleshooting
A
Is the level of
high pressure higher
than normal level?
NO
YES
Si20-701_B
Check the each
item.
• Refrigerant
overcharge
• Air mixed in
refrigerant
system
• Soiled heat
exchanger
• Short circuit of
discharge air
• Disturbing item
in airflow
• Defective
outdoor unit fan
motor (Refer to
troubleshooting
"E7".)
Check the each
item.
• Insufficient
compression of
compressor
• Insufficient
circulation of
refrigerant
• Defective
electronic
expansion valve
43